CN114347503A - Carbon-glass mixed pulling plate for wind power blade main beam - Google Patents
Carbon-glass mixed pulling plate for wind power blade main beam Download PDFInfo
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- CN114347503A CN114347503A CN202210004903.1A CN202210004903A CN114347503A CN 114347503 A CN114347503 A CN 114347503A CN 202210004903 A CN202210004903 A CN 202210004903A CN 114347503 A CN114347503 A CN 114347503A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/263—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer having non-uniform thickness
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- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
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- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
- B29L2031/082—Blades, e.g. for helicopters
- B29L2031/085—Wind turbine blades
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- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/106—Carbon fibres, e.g. graphite fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
Abstract
The invention belongs to the technical field of preparation of mixed pultrusion plates, and particularly relates to a carbon-glass mixed pulling plate for a wind power blade main beam. The device comprises a carbon fiber area and a glass fiber area which are not mutually contained, wherein the carbon fiber area and the glass fiber area are both horizontally arranged, or the carbon fiber area and the glass fiber area are both vertically arranged, or the glass fiber area wraps the carbon fiber area or the carbon fiber area wraps the glass fiber area; the carbon fiber area and the glass fiber area are both horizontally arranged, the carbon fiber area or the glass fiber area with smaller area on the cross section of the mixed pulling plate is not communicated with any two surfaces of the mixed pulling plate in the height direction and the width direction of the mixed pulling plate, or the carbon fiber area or the glass fiber area presents an I shape on the cross section of the mixed pulling plate. According to the invention, different structures are adjusted for the carbon fiber area and the glass fiber area to form different plate cross sections, so that the carbon-glass hybrid pulling plate has excellent mechanical properties, light structural weight, low cost and easy production.
Description
Technical Field
The invention belongs to the technical field of preparation of mixed pultrusion plates, and particularly relates to a carbon-glass mixed pulling plate for a wind power blade main beam.
Background
With the continuous development of society, the demand for new energy such as wind power is more urgent. In order to obtain more wind energy and reduce the cost, the development of large-scale wind power equipment becomes a necessary trend. The glass fiber-carbon fiber hybrid fiber composite material becomes a novel strong and tough structural material, and is currently applied to aerospace structural members such as wind power blades, bridge reinforcement, compressed natural gas cylinders (aerospace), solid rocket engine casings and the like, so that the product has the advantages of high modulus, high toughness, low manufacturing cost and low weight. A carbon fiber-glass fiber hybrid fiber pultrusion plate (carbon-glass hybrid pultrusion plate) is a ternary composite material which is manufactured by adopting a pultrusion process through glass fibers, carbon fibers and resin. The traditional glass fiber pultrusion plate technology tends to mature, and the improvement capability in performance is sunk into the bottleneck.
Chinese patent CN 113119491a discloses a carbon glass mixed plate and its application method. This carbon glass mixes flat board includes: the carbon fiber area is wrapped in the glass fiber area, and the two surfaces of the glass fiber area are communicated at least in one direction. In view of the above, the invention provides a carbon-glass mixed flat plate and an application method thereof, and aims to solve the technical problem that a blade lightning protection system is difficult to establish due to potential difference of a plate when a carbon-glass fiber composite pultrusion plate is used for laying a blade main beam in the prior art.
Chinese patent CN108005846A discloses a main bearing beam for a large-scale wind power blade, a hybrid wing spar composite wind power blade and a preparation method thereof. The main bearing beam is a combination of carbon fiber/glass fiber hybrid composite round bar profiles, and the combination is formed by bunching and shaping a plurality of carbon fiber/glass fiber hybrid composite round bar profiles through glass fiber felts or yarns.
Chinese patent CN103437965A discloses a wind-powered electricity generation blade of fine and glass fiber combined material of carbon, wind-powered electricity generation blade comprises three-layer material, and the first layer is the fine fabric layer of glass, and the second floor is the carbon fiber layer, and the third layer is the fine fabric layer of glass, the fine fabric layer of first layer glass becomes 45 jiaos with the fine fabric layer of third layer glass, and the fine fabric layer clamp of second layer glass is between the fine fabric layer of first layer glass and the fine fabric layer of third layer glass.
The structure and solved technical problems of the carbon glass plate disclosed in the above patent are completely different from the present invention.
In the prior art, the carbon-glass mixed pulling plate has a plurality of problems, namely poor mechanical property and single structure. Therefore, it is highly desirable to provide a carbon-glass hybrid pulling plate for a main beam of a wind turbine blade, which has excellent mechanical properties and diversified structures.
Disclosure of Invention
The invention aims to provide a carbon-glass hybrid pulling plate for a wind power blade main beam, which has the advantages of excellent mechanical property, light structural weight, diversified structure, low cost and easiness in production.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the carbon-glass hybrid pulling plate for the wind power blade main beam comprises a carbon fiber area and a glass fiber area which are not mutually contained, wherein the carbon fiber area and the glass fiber area are both horizontally arranged, or the carbon fiber area and the glass fiber area are both vertically arranged.
Preferably, the carbon fiber area and the glass fiber area are divided into two parts in the length direction or the width direction of the cross section of the mixed pulling plate; or the carbon fiber area is uniformly divided into glass fiber areas in the length direction or the width direction of the cross section of the mixed pulling plate; or the glass fiber area is divided into carbon fiber areas in the length direction or the width direction of the cross section of the mixed pulling plate.
Preferably, the long sides of the cross section of the mixed pulling plate are parallel straight lines, and the short sides are trapezoids of an inward arc and an outward arc respectively.
The carbon-glass hybrid pulling plate for the wind power blade main beam comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area is wrapped by the glass fiber area or the glass fiber area is wrapped by the carbon fiber area; the carbon fiber area and the glass fiber area are both horizontally arranged, the carbon fiber area or the glass fiber area with smaller area on the cross section of the mixed pulling plate is not communicated with any two surfaces of the mixed pulling plate in the height direction and the width direction of the mixed pulling plate.
Preferably, when the carbon fiber regions are wrapped by the glass fiber regions, the number of the carbon fiber regions is 1-2; when the number of the carbon fiber areas is 1, the carbon fiber areas are positioned at the upper part, the middle part or the lower part of the glass fiber area; when the number of the carbon fiber areas is 2, the carbon fiber areas are positioned in the middle part or the upper part and the lower part of the glass fiber area; or
When the carbon fiber area wraps the glass fiber area, the number of the glass fiber areas is 1-2; when the number of the glass fiber areas is 1, the glass fiber areas are positioned at the upper part, the middle part or the lower part of the carbon fiber area; when the number of the glass fiber regions is 2, the glass fiber regions are located in the middle, or upper and lower portions of the glass fiber regions.
The carbon-glass hybrid pulling plate for the wind power blade main beam comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area is wrapped by the glass fiber area or the glass fiber area is wrapped by the carbon fiber area; the carbon fiber area or the glass fiber area is in an I shape on the cross section of the mixed pulling plate.
The carbon-glass hybrid pulling plate for the wind power blade main beam comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area is wrapped by the glass fiber area or the glass fiber area is wrapped by the carbon fiber area; the carbon fiber area or the glass fiber area presents a plurality of circular areas on the cross section of the mixed pulling plate, and any two surfaces of the mixed pulling plate are not communicated with each other in the height direction and the width direction of the mixed pulling plate.
Preferably, the carbon fiber area is a plurality of circular areas and is used as a reinforcing part to be arranged in the glass fiber area; or the carbon fiber area is wrapped by the glass fiber and divided into a plurality of circular areas which are used as reinforcing parts and are arranged in the glass fiber area.
The carbon-glass hybrid pulling plate for the wind power blade main beam comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area is wrapped by the glass fiber area or the glass fiber area is wrapped by the carbon fiber area; the carbon fiber area or the glass fiber area presents a V-shaped area or a wavy area on the cross section of the mixed pulling plate.
Preferably, the carbon fiber area is a V-shaped area and is used as a reinforcing part to be arranged in the glass fiber area; or the carbon fiber area is a wave area and is used as a reinforcing part to be arranged in the glass fiber area.
The carbon-glass hybrid pulling plate for the wind power blade main beam comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area wraps the glass fiber area, and four edges of the glass fiber area are all concave arcs; or the carbon fiber area wraps the glass fiber area, four sides of the glass fiber area are all concave arcs, and the circular carbon fiber area is introduced into the center of the cross section of the mixed pulling plate to serve as a reinforcing core.
According to the carbon-glass hybrid pulling plate for the main beam of the wind power blade, felt or cloth or bulked yarn is added or directly contacted between the interfaces of the carbon fiber area and the glass fiber area; the bulked yarn is pure glass fiber, pure carbon fiber or mixed fiber of glass fiber and pure carbon fiber.
The cross section of the mixed pulling plate is rectangular, the length of the rectangle is 110 mm and 180mm, and the width of the rectangle is 2-8 mm.
The invention discloses a preparation method of a carbon-glass hybrid pulling plate for a wind power blade main beam, which comprises the following steps: and (2) dipping the carbon fiber yarns and the glass fiber yarns, dividing the carbon fiber yarns and the glass fiber after dipping into a preforming mold with a preset cross section through an inlet for preforming, then feeding the preforming mold and demolding cloth into a forming mold, and then heating, curing and drawing to obtain the carbon-glass mixed pulling plate for the wind power blade main beam.
The invention has the following beneficial effects:
according to the invention, different structures are adjusted in the carbon fiber area and the glass fiber area to form different plate cross sections, so that the carbon-glass mixed pulling plate has the advantages of uniform distribution of mechanical properties, excellent mechanical properties, light structural mass, diversified structure, low cost and easiness in production.
Drawings
FIG. 1 is a schematic cross-sectional view of a carbon-glass hybrid pulling plate for a main beam of a wind turbine blade and a splicing manner thereof in example 1;
FIG. 2 is a schematic cross-sectional view of a carbon-glass hybrid pulling plate for a main beam of a wind power blade and a splicing manner thereof in example 2;
FIG. 3 is a schematic cross-sectional view of a carbon-glass hybrid pulling plate for a main beam of a wind power blade and a splicing manner thereof according to example 3;
FIG. 4 is a schematic cross-sectional view of a carbon-glass hybrid pulling plate for a main beam of a wind turbine blade and a splicing manner thereof according to example 4;
FIG. 5 is a schematic cross-sectional view of a carbon-glass hybrid pulling plate for a main beam of a wind power blade of example 5 and a splicing manner thereof;
FIG. 6 is a schematic cross-sectional view of a carbon-glass hybrid pulling plate for a main beam of a wind turbine blade and a splicing manner thereof according to example 6;
FIG. 7 is a schematic cross-sectional view of a carbon-glass hybrid pulling plate for a main beam of a wind turbine blade and a splicing manner thereof according to example 7;
FIG. 8 is a schematic cross-sectional view of a carbon-glass hybrid pulling plate for a main beam of a wind turbine blade and a splicing manner thereof according to example 8;
FIG. 9 is a schematic cross-sectional view of the carbon-glass hybrid pulling plate for the main beam of the wind turbine blade of example 9 and the splicing manner thereof;
FIG. 10 is a schematic cross-sectional view of the carbon-glass hybrid pulling plate for the main beam of the wind turbine blade of example 10 and a splicing manner thereof;
FIG. 11 is a schematic cross-sectional view of the carbon-glass hybrid pulling plate for the main beam of the wind turbine blade of example 11 and the splicing manner thereof;
FIG. 12 is a schematic cross-sectional view of the carbon-glass hybrid pulling plate for the main beam of the wind turbine blade of example 12 and the splicing manner thereof;
FIG. 13 is a schematic cross-sectional view of the carbon-glass hybrid pulling plate for the main beam of the wind turbine blade of example 13 and the splicing manner thereof;
FIG. 14 is a schematic cross-sectional view of the carbon-glass hybrid pulling plate for the main beam of the wind turbine blade of example 14 and the splicing manner thereof;
FIG. 15 is a schematic cross-sectional view of the carbon-glass hybrid pulling plate for the main beam of the wind turbine blade of example 15 and the splicing manner thereof;
FIG. 16 is a schematic cross-sectional view of the carbon-glass hybrid pulling plate for the main beam of the wind turbine blade of example 16 and the splicing manner thereof;
FIG. 17 is a schematic cross-sectional view of a carbon-glass hybrid pulling plate for a main beam of a wind turbine blade and a splicing manner thereof according to example 17;
FIG. 18 is a schematic cross-sectional view of the carbon-glass hybrid pulling plate for the main beam of the wind turbine blade of example 18 and the splicing manner thereof;
FIG. 19 is a schematic cross-sectional view of the carbon-glass hybrid pulling plate for the main beam of the wind turbine blade of example 19 and the splicing manner thereof;
FIG. 20 is a schematic cross-sectional view of the carbon-glass hybrid pulling plate for the main beam of the wind turbine blade of example 20 and a splicing manner thereof;
FIG. 21 is a schematic cross-sectional view of the carbon-glass hybrid pulling plate for the main beam of the wind turbine blade of example 21 and the splicing manner thereof;
wherein: the uppermost view of each of fig. 1-21 is a schematic cross-sectional view of a carbon-glass hybrid, the remaining views being schematic cross-sectional views of the manner in which the carbon-glass hybrid is spliced; the shaded part is carbon fiber; the blank part is glass fiber.
Detailed Description
The present invention is further described below with reference to examples.
Example 1
The carbon-glass hybrid pulling plate for the main beam of the wind power blade is characterized in that the cross section of the plate is rectangular, the length of the rectangle is 110-180mm, and the width of the rectangle is 2-8 mm; the molding is carried out by a pultrusion process, so that excellent mechanical properties and cost can be considered.
The carbon-glass hybrid pulling plate for the wind power blade main beam comprises a carbon fiber area and a glass fiber area which are not mutually contained, wherein the carbon fiber area and the glass fiber area are both horizontally arranged, and the carbon fiber area and the glass fiber area are divided into two parts along the width direction of the cross section of the plate; the cross-sectional schematic diagram and the cross-sectional schematic diagram of the splicing mode are shown in FIG. 1. Compared with a plate with the same carbon fiber volume content and through carbon fibers in the width direction of the cross section, the tensile strength of the plate at 90 degrees is improved by 5-10 percent.
Example 2
The carbon-glass hybrid pulling plate for the wind power blade girder comprises a carbon fiber area and a glass fiber area which are not mutually contained, and is different from the embodiment 1 in that the carbon fiber area and the glass fiber area are both vertically arranged and are divided into two parts along the length direction of the cross section of the plate; the cross-sectional schematic diagram and the cross-sectional schematic diagram of the splicing mode are shown in FIG. 2. Due to the change of the structure, the combined use can be carried out according to different arrangement modes, and the use process is more flexible and convenient.
Example 3
The carbon-glass hybrid pulling plate for the wind power blade main beam comprises a carbon fiber area and a glass fiber area which are not mutually contained, wherein the carbon fiber area is used as a reinforcing part and divides the glass fiber area into two parts along the width direction of the cross section of the plate; the cross-sectional schematic view and the cross-sectional schematic view of the splicing method are shown in fig. 3. The arrangement mode enables the internal stress of the plate to be more uniform, the flatness of the plate to be more excellent, and compared with the plate with the through carbon fibers in the width direction of the cross section, the interlaminar shear strength of the plate is improved by 10-15%, and the tensile strength at 90 degrees is improved by 10-20%.
Example 4
The carbon-glass hybrid pulling plate for the main beam of the wind power blade comprises a carbon fiber area and a glass fiber area which are not mutually contained, wherein the glass fiber area is used as a reinforcing part and divides the carbon fiber area into two parts along the width direction of the cross section of the plate; the cross-sectional schematic view and the cross-sectional schematic view of the splicing method are shown in fig. 4. The internal stress of the pultruded panel with the arrangement mode is more uniform, and the flatness of the panel is superior. Compared with the plate with the through carbon fibers in the width direction of the cross section, the interlaminar shear strength of the plate is improved by 10-15%, and the tensile strength at 90 degrees is improved by 5-10%.
Example 5
The carbon-glass hybrid pulling plate for the wind power blade girder comprises a carbon fiber area and a glass fiber area which are not mutually contained, wherein the carbon fiber area equally divides the glass fiber area in the length direction of the cross section of the hybrid pulling plate, and the carbon fiber area and the glass fiber area alternately appear. The cross-sectional schematic view and the cross-sectional schematic view of the splicing manner are shown in fig. 5. Can carry out the line spacing adjustment according to the demand, use the flexibility ratio and increase.
Example 6
The carbon-glass hybrid pulling plate for the wind power blade main beam comprises a carbon fiber area and a glass fiber area, wherein the periphery of one layer of the carbon fiber area is wrapped by the glass fiber area, and the carbon fiber area is positioned in the middle of the glass fiber area; the cross-sectional schematic view and the cross-sectional schematic view of the splicing method are shown in fig. 6. Compared with a pure glass fiber pultrusion plate, the tensile modulus of the plate in the 90-degree direction is improved by adding the carbon fibers and wrapping the carbon fibers with the glass fibers, and the modulus of the plate is improved by about 30 percent compared with a carbon fiber pultrusion plate.
Example 7
The carbon-glass hybrid pulling plate for the wind power blade main beam comprises a carbon fiber area and a glass fiber area, wherein the periphery of one layer of the glass fiber area is wrapped by the carbon fiber area, and the glass fiber area is positioned in the middle of the carbon fiber area; the cross-sectional schematic view and the cross-sectional schematic view of the splicing method are shown in fig. 7. The coating method reduces the consumption of the carbon fiber and saves the cost.
Example 8
The carbon-glass hybrid pulling plate for the wind power blade main beam comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area is a rectangular area and is arranged in the glass fiber area as a reinforcing part, the carbon fiber area is located at the lower part of the glass fiber area, and three sides of the carbon-glass hybrid pulling plate are surrounded by the glass fiber area. The cross-sectional schematic view and the cross-sectional schematic view of the splicing manner are shown in fig. 8. The method reduces the consumption of carbon fiber, improves the performance and saves the production cost.
Example 9
The carbon-glass hybrid pulling plate for the wind power blade girder comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area is a rectangular area and is arranged in the glass fiber area as a reinforcing part, the number of the carbon fiber area is 2, the carbon fiber area is positioned at the upper part and the lower part of the glass fiber area and is symmetrically arranged up and down, and the schematic cross section diagram of the splicing mode are shown in fig. 9. The method can make the mechanical properties of the plate uniformly distributed.
Example 10
The carbon-glass hybrid pulling plate for the wind power blade girder comprises a carbon fiber area and a glass fiber area, wherein the glass fiber area is a rectangular area and is arranged in the carbon fiber area as a reinforcing part, the number of the glass fiber area is 2, the glass fiber area is positioned at the upper part and the lower part of the carbon fiber area and is symmetrically arranged up and down, and the schematic cross section diagram of the splicing mode are shown in figure 10. Compared with pure carbon fiber, the method reduces the consumption of carbon fiber and the cost.
Example 11
The carbon-glass hybrid pulling plate for the wind power blade girder comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area is a rectangular area and is arranged in the glass fiber area as a reinforcing part, the number of the carbon fiber area is 2, the carbon fiber area is positioned in the middle of the glass fiber area, and the carbon fiber area and the glass fiber area are symmetrically arranged. The cross-sectional schematic view and the cross-sectional schematic view of the splicing method are shown in fig. 11. Compared with the embodiment 1, the arrangement mode of the carbon fibers and the glass fibers reduces the production cost.
Example 12
The carbon-glass hybrid pulling plate for the wind power blade girder comprises a carbon fiber area and a glass fiber area, wherein the glass fiber area is a rectangular area and is arranged in the carbon fiber area as a reinforcing part, the number of the glass fiber area is 2, the glass fiber area is positioned in the middle of the carbon fiber area, and the glass fiber area is arranged in a bilateral symmetry mode. The cross-sectional schematic view and the cross-sectional schematic view of the splicing method are shown in fig. 12. Compared with a pure carbon fiber plate, the tensile property at 90 degrees is improved by about 5 percent, and the production cost is reduced.
Example 13
The carbon-glass hybrid pulling plate for the wind power blade main beam comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area is wrapped by the glass fiber area; the carbon fiber area presents an I shape on the cross section of the mixed pulling plate. The cross-sectional schematic view and the cross-sectional schematic view of the splicing method are shown in fig. 13. Different from the embodiment 9, the carbon fibers which are symmetrically distributed in a rectangular shape from top to bottom are penetrated, and the tensile modulus at 0 ℃ is increased by 50-100% along with the increase of the amount of the carbon fibers penetrated in the middle.
Example 14
The carbon-glass hybrid pulling plate for the wind power blade main beam comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area wraps the glass fiber area; the glass fiber area presents an I shape on the cross section of the mixed pulling plate. The cross-sectional view and the cross-sectional view of the splicing method are shown in fig. 14. Compared with the embodiment 10, the method has the advantages that the glass fibers which are symmetrically distributed in a rectangular shape are communicated, and compared with pure carbon fibers, the method reduces the using amount of carbon fibers and reduces the cost.
Example 15
The carbon-glass hybrid pulling plate for the wind power blade girder comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area is divided into a plurality of circular areas and is arranged in the glass fiber area as a reinforcing part, and the carbon fiber area is not communicated with any two surfaces of the hybrid pulling plate in the height direction and the width direction of the hybrid pulling plate. The cross-sectional view and the cross-sectional view of the splicing method are shown in fig. 15. The addition of the carbon fiber greatly improves the tensile modulus and strength in the 0-degree direction compared with a pure glass fiber board, and the 0-degree tensile modulus is increased by 50-100 percent along with the increase of the carbon fiber proportion.
Example 16
The carbon-glass hybrid pulling plate for the wind power blade main beam comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area wraps glass fibers and is divided into a plurality of circular areas which are used as reinforcing parts to be arranged in the glass fiber area. The cross-sectional view and the cross-sectional view of the splicing method are shown in fig. 16. The function of the middle wrapping glass fiber is to reduce the production cost. Meanwhile, the introduction of the carbon fiber improves the tensile and compressive properties in the 0-degree direction. The circular area enables the bending performance of the sample strips to be improved, compared with a plate with the same carbon fiber volume content and through carbon fibers in the width direction of the cross section, the bending strength is improved by 30%, and compared with a pure glass fiber plate, the bending modulus of the plate with the arrangement mode is improved by 50-100%.
Example 17
The carbon-glass hybrid pulling plate for the wind power blade main beam comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area is divided into V-shaped areas and is arranged in the glass fiber area as a reinforcing part. The cross-sectional view and the cross-sectional view of the splicing method are shown in fig. 17. The V-shaped structure ensures that less carbon fibers have larger contact area with the glass fibers, and the contact area of the carbon fibers and the glass fibers is increased, so that the interlaminar shear strength is improved by 5-10 percent compared with other plates with the same volume content of the carbon fibers.
Example 18
The carbon-glass hybrid pulling plate for the wind power blade main beam comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area is divided into a wave area and is arranged in the glass fiber area as a reinforcing part. The cross-sectional view and the cross-sectional view of the splicing method are shown in fig. 18. The carbon fibers are distributed into the wavy area, so that the contact area between the carbon fibers and the glass fibers is increased, the interlaminar shear strength of the plate is improved under the condition that the content of the carbon fibers is not increased, and the cost is saved.
Example 19
The carbon-glass hybrid pulling plate for the wind power blade main beam comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area wraps the glass fiber area, and four sides of the glass fiber area are all concave arcs. The cross-sectional view and the cross-sectional view of the splicing method are shown in fig. 19. The content of expensive carbon fiber is reduced as much as possible, thereby saving the production cost.
Example 20
The carbon-glass mixed pulling plate for the wind power blade girder comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area wraps the glass fiber area, four sides of the glass fiber area are all concave arcs, and the circular carbon fiber area is introduced into the center of the cross section of the plate to serve as a reinforcing core. The cross-sectional view and the cross-sectional view of the splicing method are shown in fig. 20. The content of expensive carbon fiber is reduced as much as possible, thereby achieving the purpose of reducing the production cost. Compared with example 19, the strength was improved without increasing the cost much.
Example 21
The carbon-glass hybrid pulling plate for the wind power blade girder comprises a carbon fiber area and a glass fiber area, wherein the long edge of the cross section of the plate is a parallel straight line, the short edge of the cross section of the plate is a trapezoid with an inwards concave circular arc and an outwards convex circular arc, and the carbon fiber area and the glass fiber area are uniformly distributed in the upper part and the lower part. The cross-sectional view and the cross-sectional view of the splicing method are shown in fig. 21. The purpose of introducing the concave arc and the convex arc is to increase the contact area between the plates and improve the splicing strength in order to facilitate the perfect contact and combination between the plates in the use and splicing process. Compared with the traditional rectangle, the tensile strength of the circular arc splicing is improved by 10-15 percent.
In embodiments 2 to 21, the cross section of the carbon-glass hybrid pulling plate for the main beam of the wind turbine blade is rectangular, the length of the rectangle is 110 and 180mm, and the width is 2 to 8 mm; the molding is carried out by a pultrusion process, so that excellent mechanical properties and cost can be considered.
The dimensions in examples 2 to 21 may be arbitrarily selected within the specified ranges depending on the actual production conditions.
The preparation method of the carbon-glass hybrid pulling plate for the wind power blade main beam comprises the following steps: and (2) dipping the carbon fiber yarns and the glass fiber yarns, dividing the carbon fiber yarns and the glass fiber after dipping into a preforming mold with a preset cross section through an inlet for preforming, then feeding the preforming mold and demolding cloth into a forming mold, and then heating, curing and drawing to obtain the carbon-glass mixed pulling plate for the wind power blade main beam.
Claims (12)
1. The utility model provides a carbon-glass mixes arm-tie for wind-powered electricity generation blade girder which characterized in that: the device comprises a carbon fiber area and a glass fiber area which are not contained, wherein the carbon fiber area and the glass fiber area are both horizontally arranged, or the carbon fiber area and the glass fiber area are both vertically arranged.
2. The carbon-glass hybrid pulling plate for the main beam of the wind power blade of claim 1, characterized in that: the carbon fiber area and the glass fiber area are divided into two parts in the length direction or the width direction of the cross section of the hybrid pulling plate; or the carbon fiber area is uniformly divided into glass fiber areas in the length direction or the width direction of the cross section of the mixed pulling plate; or the glass fiber area is divided into carbon fiber areas in the length direction or the width direction of the cross section of the mixed pulling plate.
3. The carbon-glass hybrid pulling plate for the main beam of the wind power blade of claim 1, characterized in that: the long sides of the cross section of the mixed pulling plate are parallel straight lines, and the short sides are trapezoids of an inward concave arc and an outward convex arc respectively.
4. The utility model provides a carbon-glass mixes arm-tie for wind-powered electricity generation blade girder which characterized in that: the device comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area is wrapped by the glass fiber area or the glass fiber area is wrapped by the carbon fiber area; the carbon fiber area and the glass fiber area are both horizontally arranged, the carbon fiber area or the glass fiber area with smaller area on the cross section of the mixed pulling plate is not communicated with any two surfaces of the mixed pulling plate in the height direction and the width direction of the mixed pulling plate.
5. The carbon-glass hybrid pulling plate for the main beam of the wind power blade as set forth in claim 4, wherein: when the glass fiber area wraps the carbon fiber area, the number of the carbon fiber area is 1-2; when the number of the carbon fiber areas is 1, the carbon fiber areas are positioned at the upper part, the middle part or the lower part of the glass fiber area; when the number of the carbon fiber areas is 2, the carbon fiber areas are positioned in the middle part or the upper part and the lower part of the glass fiber area; or
When the carbon fiber area wraps the glass fiber area, the number of the glass fiber areas is 1-2; when the number of the glass fiber areas is 1, the glass fiber areas are positioned at the upper part, the middle part or the lower part of the carbon fiber area; when the number of the glass fiber regions is 2, the glass fiber regions are located in the middle, or upper and lower portions of the glass fiber regions.
6. The utility model provides a carbon-glass mixes arm-tie for wind-powered electricity generation blade girder which characterized in that: the device comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area is wrapped by the glass fiber area or the glass fiber area is wrapped by the carbon fiber area; the carbon fiber area or the glass fiber area is in an I shape on the cross section of the mixed pulling plate.
7. The utility model provides a carbon-glass mixes arm-tie for wind-powered electricity generation blade girder which characterized in that: the device comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area is wrapped by the glass fiber area or the glass fiber area is wrapped by the carbon fiber area; the carbon fiber area or the glass fiber area presents a plurality of circular areas on the cross section of the mixed pulling plate, and any two surfaces of the mixed pulling plate are not communicated with each other in the height direction and the width direction of the mixed pulling plate.
8. The carbon-glass hybrid pulling plate for the main beam of the wind power blade as set forth in claim 7, wherein: the carbon fiber area is a plurality of circular areas and is used as a reinforcing part to be arranged in the glass fiber area; or the carbon fiber area is wrapped by the glass fiber and divided into a plurality of circular areas which are used as reinforcing parts and are arranged in the glass fiber area.
9. The utility model provides a carbon-glass mixes arm-tie for wind-powered electricity generation blade girder which characterized in that: the device comprises a carbon fiber area and a glass fiber area, wherein the carbon fiber area is wrapped by the glass fiber area or the glass fiber area is wrapped by the carbon fiber area; the carbon fiber area or the glass fiber area presents a V-shaped area or a wavy area on the cross section of the mixed pulling plate.
10. The carbon-glass hybrid pulling plate for the main beam of the wind turbine blade as set forth in claim 9, wherein: the carbon fiber area is a V-shaped area and is used as a reinforcing part to be arranged in the glass fiber area; or the carbon fiber area is a wave area and is used as a reinforcing part to be arranged in the glass fiber area.
11. The utility model provides a carbon-glass mixes arm-tie for wind-powered electricity generation blade girder which characterized in that: the carbon fiber area wraps the glass fiber area, and four sides of the glass fiber area are all concave arcs; or the carbon fiber area wraps the glass fiber area, four sides of the glass fiber area are all concave arcs, and the circular carbon fiber area is introduced into the center of the cross section of the mixed pulling plate to serve as a reinforcing core.
12. The carbon-glass hybrid pulling plate for the main beam of the wind power blade as defined in any one of claims 1 to 11, wherein: felt or cloth or bulked yarn is added between the interfaces of the carbon fiber area and the glass fiber area or is directly contacted with the interfaces of the carbon fiber area and the glass fiber area; the cross section of the mixed pulling plate is rectangular, the length of the rectangle is 110 mm and 180mm, and the width of the rectangle is 2-8 mm.
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| CN202210004903.1A CN114347503A (en) | 2022-01-05 | 2022-01-05 | Carbon-glass mixed pulling plate for wind power blade main beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4335629A1 (en) * | 2022-09-08 | 2024-03-13 | LM Wind Power A/S | Precured fibrous elements for a spar cap of a wind turbine blade |
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